package com.dy.course.util;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * 说明：日期处理 创建人：FH Q313596790 修改时间：2015年11月24日
 * 
 * @version
 */
public class DateUtil {

	private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy");
	private final static SimpleDateFormat sdfDay = new SimpleDateFormat("yyyy-MM-dd");
	private final static SimpleDateFormat sdfDays = new SimpleDateFormat("yyyyMMdd");
	private final static SimpleDateFormat sdfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	private final static String WIN_SEASON_START = "10-04";
	private final static String WIN_SEASON_END = "04-30";
	private final static String SUMMER_SEASON_START = "05-01";
	private final static String SUMMER_SEASON_END = "09-30";

	public static Date now() {
		return new Date();
	}

	/**
	 * 获取YYYY格式
	 * 
	 * @return
	 */
	public static String getYear() {
		return sdfYear.format(new Date());
	}

	/**
	 * 获取YYYY-MM-DD格式
	 * 
	 * @return
	 */
	public static String getDay() {
		return sdfDay.format(new Date());
	}

	/**
	 * 获取YYYYMMDD格式
	 * 
	 * @return
	 */
	public static String getDays() {
		return sdfDays.format(new Date());
	}

	/**
	 * 获取YYYY-MM-DD HH:mm:ss格式
	 * 
	 * @return
	 */
	public static String getTime() {
		return sdfTime.format(new Date());
	}

	/**
	 * @Title: compareDate
	 * @Description: 
	 * @param s
	 * @param e
	 * @return boolean
	 * @throws @author
	 *             fh
	 */
	public static boolean compareDate(String s, String e) {
		if (fomatDate(s) == null || fomatDate(e) == null) {
			return false;
		}
		return fomatDate(s).getTime() >= fomatDate(e).getTime();
	}

	/**
	 * 格式化日期
	 * 
	 * @return
	 */
	public static Date fomatDate(String date) {
		DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
		try {
			return fmt.parse(date);
		} catch (ParseException e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 校验日期是否合法
	 * 
	 * @return
	 */
	public static boolean isValidDate(String s) {
		DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
		try {
			fmt.parse(s);
			return true;
		} catch (Exception e) {
			// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
			return false;
		}
	}

	/**
	 * @param startTime
	 * @param endTime
	 * @return
	 */
	public static int getDiffYear(String startTime, String endTime) {
		DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
		try {
			// long aa=0;
			int years = (int) (((fmt.parse(endTime).getTime() - fmt.parse(startTime).getTime()) / (1000 * 60 * 60 * 24))
					/ 365);
			return years;
		} catch (Exception e) {
			// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
			return 0;
		}
	}

	/**
	 * <li>功能描述：时间相减得到天数
	 * 
	 * @param beginDateStr
	 * @param endDateStr
	 * @return long
	 * @author Administrator
	 */
	public static long getDaySub(String beginDateStr, String endDateStr) {
		long day = 0;
		java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-dd");
		java.util.Date beginDate = null;
		java.util.Date endDate = null;

		try {
			beginDate = format.parse(beginDateStr);
			endDate = format.parse(endDateStr);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000);
		// System.out.println("相隔的天数="+day);

		return day;
	}

	/**
	 * 得到n天之后的日期
	 * 
	 * @param days
	 * @return
	 */
	public static String getAfterDayDate(String days) {
		int daysInt = Integer.parseInt(days);

		Calendar canlendar = Calendar.getInstance(); // java.util包
		canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
		Date date = canlendar.getTime();

		SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String dateStr = sdfd.format(date);

		return dateStr;
	}

	/**
	 * 得到n天之后是周几
	 * 
	 * @param days
	 * @return
	 */
	public static String getAfterDayWeek(String days) {
		return getAfterDayWeek(Integer.parseInt(days));
	}

	/**
	 * 得到n天之后是周几
	 * 
	 * @param days
	 * @return
	 */
	public static String getAfterDayWeek(Integer days) {
		return getAfterDayWeek(now(), days);
	}

	/**
	 * 得到n天之后是周几
	 * 
	 * @param days
	 * @return
	 */
	public static String getAfterDayWeek(Date oneDay, String days) {
		return getAfterDayWeek(oneDay, Integer.parseInt(days));
	}

	/**
	 * 得到n天之后是周几
	 * 
	 * @param days
	 * @return
	 */
	public static String getAfterDayWeek(Date oneDay, Integer days) {
		Calendar canlendar = Calendar.getInstance(); // java.util包
		if (oneDay != null) {
			canlendar.setTime(oneDay);
		}
		canlendar.add(Calendar.DATE, days); // 日期减 如果不够减会将月变动
		Date date = canlendar.getTime();
		SimpleDateFormat sdf = new SimpleDateFormat("E");
		String dateStr = sdf.format(date);
		return dateStr;
	}

	/**
	 * 上面的weekday就是周几，但是， Java里面坑爹是weekday=1，当天是周日； weekday=2，当天是周一；...;
	 * weekday=7，当天是周六。 这和JS中0是周日，1是周一，2是周二，...，6是周六是不一样的，
	 * 所以，按JS的经验做Java的类似程序要出错的。
	 * 
	 * @param date
	 * @return
	 */
	public static int getDayOfWeek(Date date) {
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		int dayOfWeek = c.get(Calendar.DAY_OF_WEEK);
		return dayOfWeek;
	}

	/**
	 * 日期对应的星期
	 * @param date
	 * @return
	 */
	public static int getWeekOfYear(Date date) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		int week = cal.get(Calendar.WEEK_OF_YEAR);
		return week;
	}

	public static Date getYearByWeekAndWeekend(Integer year, Integer week, Integer weekend) {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, year); // 2016年
		cal.set(Calendar.WEEK_OF_YEAR, week); // 设置为2016年的第10周
		cal.set(Calendar.DAY_OF_WEEK, weekend); // 1表示周日，2表示周一，7表示周六
		Date date = cal.getTime();
		return date;
	}

	public static String getDateString(Date date, String format) {
		SimpleDateFormat sdf = new SimpleDateFormat(format);
		return sdf.format(date);
	}

	public static Date mergeDate(Date date, Date time) {
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
		SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
		String dateString = dateFormat.format(date);
		String timeString = timeFormat.format(time);
		String resultString = dateString + " " + timeString;
		SimpleDateFormat resultFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		Date result = null;
		try {
			result = resultFormat.parse(resultString);
		} catch (Exception e) {
			throw new RuntimeException("日期合并异常", e);
		}
		return result;
	}

	public static Integer getDateYear(Date date) {
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy");
		String year = dateFormat.format(date);
		return Integer.parseInt(year);
	}

	
	public static Integer getSeason(Date date){
		return getSeason(date,WIN_SEASON_START,WIN_SEASON_END,SUMMER_SEASON_START,SUMMER_SEASON_END);
	}
	
	public static Integer getSeason(Date date, String type1Start, String type1End, String type2Start, String type2End){
		String dateStr = new SimpleDateFormat("MM-dd").format(date);
		if(type2Start.compareTo(dateStr) <= 0 && type2End.compareTo(dateStr) >= 0){
			return 1;
		}
		return 2;
	}
	
	

	public static void main(String[] args) throws Exception {
	}

}
